/*
 * Copyright 2017 Netflix, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.netflix.spinnaker.gate.security.x509;

import java.security.cert.X509Certificate;

public interface X509UserIdentifierExtractor {

  /**
   * Extracts the user identifier (email, application name, instance id, etc) from the X509
   * certificate.
   */
  String fromCertificate(X509Certificate cert);
}
